hmm. sounds like you should be pretty close. i have the needle in the middle position, pilot screw about 2 turns out, and airbox lid removed and exhaust plug removed, and my bike runs pretty much great everywhere. i would double-check the needle, just to be sure. it's really easy to get to. just pop off the seat, shrouds and tank, and you can unscrew the top of the carb. pull out the slide and diaphragm assembly, and the needle comes with it. verify that it really is the 49-state needle, and it really is in the middle setting. when reassembling, be sure the diaphragm is seated right around the lip.
mw